2222215 has 4 divisors (see below), whose sum is σ = 2666664. Its totient is φ = 1777768.

The previous prime is 2222203. The next prime is 2222219. The reversal of 2222215 is 5122222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2222215 - 2²¹ = 125063 is a prime.

It is a Duffinian number.

2222215 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222217 + ... + 222226.

It is an arithmetic number, because the mean of its divisors is an integer number (666666).

2^2222215 is an apocalyptic number.

2222215 is a deficient number, since it is larger than the sum of its proper divisors (444449).

2222215 is an equidigital number, since it uses as much as digits as its factorization.

2222215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444448.

The product of its digits is 160, while the sum is 16.

The square root of 2222215 is about 1490.7095625909. The cubic root of 2222215 is about 130.4954466686.

Adding to 2222215 its reverse (5122222), we get a palindrome (7344437).

The spelling of 2222215 in words is "two million, two hundred twenty-two thousand, two hundred fifteen".